Composite roofing strip



Aug: lg, 1958 w. G. TRulTT' 2,847,948

' coMPosITE RooFING sm!a Filed May 6. 1955 i ATTORNEYS v lNvEN-roR(ALM/A6, M.

United States Patent Ofiee 2,847,948 YPatented Aug. 19, 1958 2,847,948COMPOSITE ROOFING-STRIP William G. Truitt, Philadelphia, lPa.Application May 6, 1955, Serial`No.-506,579 2 Claims. (Cil. 10S-6) Thisinvention relates to improvements in roofing or siding materials and,`in particular, ,relates to a roofing essentially all metallic.

Another object of the invention .is to kprovide a cornpositejr'oong orsiding strip having a base and a protective metallic sheet thereon whichprojects from one edge of the 4base so that when fafplurality of stripsis fixed on a roof, the projected portion of one sheet is sealed withthe sheet of an adjacent bottom strip, thereby sealing the base fromexposure.

Another object of the invention is to provide a composite roong orsiding strip having a base and a protective metallic sheet thereon, thebase having a plurality of apertures to assist in fixing the sheath tothe base and the base to the surface to be covered.

Another object of the invention is to provide a composite roofing orsiding strip having a base and a protective metallic sheath thereon, thebase and sheath being pliable so that the strip can be arranged in rollform for transportation and storage.

The preferred manner of constructing the invention will be described inconnection with the drawings wherein:

Figure 1 is a perspective View showing a strip of the invention arrangedin the form of a roll;

Figure 2 is a cross section of a roofing strip taken along the line 2 2of Figure 1;

Figure 3 is a fragmentary view partially cut away showing anotherembodiment of the roofing strip of the invention; and

Figure 4 is a diagrammatic sectional view showing a plurality of stripsarranged in a covering assembly on a roof.

In Figure 1 the strip is wound up in the form of a roll R and comprisesa base 1 having fixed on the top surface thereof a metallic sheet 2. Itwill be apparent that when the roll R is unwound so that the strip liesflat, the base is generally rectangular in shape and the length,thereof, i. e., in the direction shown by the arrows 3, is substantiallygreater than the width as shown by the arrows 4. The metallic sheet isalso rectangular in shape and preferably partially covers the topsurface of the base l, the lengthwise edge 2a being spaced from thelengthwise edge 5 of the base a distance d in the order of 40 to 50% ofthe total width of the base. The lengthwise edge 6 of the sheet 2 isspaced from the lengthwise edge-7 fofgthebase to.formfa projected,vportion yl0, which is about-2 or 3% of the tota1-width kof the base 1.The sheet 2, preferably Vcovers the base 1 as between the widthwiseedges.

Preferably the base 1 ismade of waterproof or waterresistant-materialsuch 'as jute, glass wool, asbestos, rag, paper pulp fibers or thelike,impregnated with a bituminous material such vas tar, asphalt orpitch. This type of base gives firm support forthe metal -sheet and ispliable so that the strip can be wound up in roll form. Where-the ybaseisfmade from material other than that suggested, `it is essential thatthe base be pliable and capable of supporting the metallic strip.

It is preferable that the Vthickness-of the metal sheet used bein thefoil class, i. e., '.0025-.005, inch thick, or, `ifnot'in thatsuggest-ed class, :be of a thickness or have a ductility such that thecomposite strip can be wound :up vinto .a roll. One metal whichparticularly satisfies this requirement `is aluminum. In addition,aluminum is npreferred becauseof its ability, when exposed -to theelements, to withstand deterioration and also becausefof its-ability to"resistpenetration of heat intothebuilding during the-summermonths andtoconserve heatiinrthe building `during the fall and winter months.

Even though1the metal sheet may be in the foil class, I have vfoundvthat where :the `base lis pliable and in the order of %4}," thick, aresilient effect is obtained which, `when'theroof `is 'walked'on,prevents damage to the metal sheet.

The aluminum s'heet'is secured .to the base preferably byfanygood'mastic. 1For example, where a waterproof or water-resistant base asmentioned is used, the adhesive may comprise tar, asphalt or pitch.Other adhesives may be used, for example, adhesives having a rubber basewith either a water, petroleum or resin vehicle. Other desirable masticsmay be of the vegetable gum type such as cotton seed oil gum. Anotherknown way of securing aluminum foil to a base made of material of thekind mentioned herein is to use foil which is pre-bonded on one sidewith kraft paper, the paper side then being secured to the base.

In Figure 3 I have shown a fragmentary view of a rooing strip which isconstructed similarly as described except that the base 1' has aplurality of holes or perforations P extending therethrough. I havefound that these perforations assist in strengthening the bond betweenthe aluminum sheet and the base and also in strengthening the bondbetween the under surface of the -base and the roof surface to which thestrip is applied.

In Figure 4 I have shown somewhat diagrammatically the manner in whichthe strips of the invention are applied to a roof. First, a starter grip12 (which may be made of the same material as the base 1 mentionedabove) is nailed or stapled to the lowermost section of the roof. Then aroll comprising the strip S-l is laid on the starter strip 12 and thesection of the roof above the starter strip, this portion of the roofand the starter strip being previously coated (by brush or spray) with amastic such as mentioned above. The projected portion 13 is pressed downon the mastic to overlap the starter strip. Thus the edge 14 of the baseand edge 12 of the starter strip are isolated from the atmosphere. Ifdesired, nails or staples may be applied along the top part of the stripnot covered by the sheet, for holding the strip in place. A mastic isthen applied along the upper portion of the strip and the roof asbetween the distance d-1 and then a roll comprising the strip S-2unwound to the position as shown. For this latter operation, the metalsheet may be provided with a guide line as line l in Figure 1. Nails orstaples are applied to the top area of the base and the projectedportion is pressed down in the mastic to overlap the metal strip S-1 toseal off the edge 16. Preferably the strip S-2 is arranged on the stripS-1 such that there is an overlap between the base of S-Z and the metalsheet of S-1 as indicated at 17. The strips S-3, S-4 and S-S are appliedin the same manner. The other side of the roof is then covered andterminates with the strip S-6. The apex of the roof is then coated witha mastic and a strip S-'l is applied. This sheet 19 which is arranged onthe base such that there is an overlap on the opposite edges such asindicated at and 21.

Where the roong operation requires that the ends of two strips beinterconnected, I prefer to overlap the ends of such adjacent strips andthen cover the exposed portion 0f the base of the top strip with asealing strip having a construction similar to that of S-7'. The sealingstrip is supplied in roll form and preferably is two or three inches inwidth and cut to required length for the covering operation. The edgesof the bases of the composite strips as laid on a roof asabove-described are preferably protected from the atmosphere by layingalong an edge of the roof a sealing strip such as mentioned above or,alternatively, rigid preformed pieces generally U-shaped in crosssection can be used, these latter pieces being nailed to the edge of theroof.

From the foregoing, it will be apparent that the invention provides acomposite roofing strip which, when manufactured, can be wound up in theform of a roll and, therefore, easily shipped and stored. From thedescription in connection with Figure 4, it will also be apparent thatthis roll-like form is highly conducive to simple and rapid applicationto a roof and that the collective disposition of the metal sheetspresents an essentially latter strip comprises a base 18 and a metal 7all-metallic surface which makes for long life and good insulatingproperties.

With regard to the strip S-7 mentioned above, it should be noted inpassing that this type of strip is also useful for the covering of aashing.

I claim:

1. A composite rooting or siding covering comprising: a pliable basewhich can be wound into roll form and unwound into strip form, the base,when unwound, being of generally lrectangular shape and being ofsubstantially greater length than width; and a metal sheet fixed to onesurface of said base, the sheet being pliable whereby it can be woundwith the base into roll form and unwound into strip form, the sheet,when unwound, being of generally rectangular shape and substantiallycovering said surface between the widthwise edges and one lengthwiseedge of the sheet being spaced inwardly -from the correspondinglengthwise edge of the base to form an uncovered area on the base andthe other lengthwise edge of the sheet being spaced from the otherlengthwise edge of the base to form a projected portion.

2. A construction in accordance with claim 1 wherein said metal sheetcomprises aluminum foil.

References Cited in the le of this patent UNITED STATES PATENTS 688,302Grether Dec. 10, 1901 1,449,058 Robinson Mar. 20, 1923 1,551,318 LoganAug. 25, 1925 1,663,565 Robinson Mar. 27, 1928 1,908,127 Deacon May 9,1933 2,433,694 Heinning Dec. 30, 1947 FOREIGN PATENTS v* 177,886Switzerland Sept. 16, 1935

